Carrier route record

B6FLL→PIT

JetBlue Airways · Fort Lauderdale to Pittsburgh

Flights: 304
Period: September 2025 to August 2026
Share of route: 27%
Carriers: 3

Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with JetBlue Airways.

JetBlue on FLL to PIT earns a D, which is as low as this site's scale goes for a reason. Only 57.7% of flights arrive inside the 15-minute window, 20 points worse than the national rate of 77.3%. Late arrivals average a little over an hour. Treat any tight connection here as a coin flip. That rests on 304 flights. The strongest carrier on the route with a full sample, Spirit Airlines, flew 410 at 69.4% on time.

The national on-time rate over the same period is 77.3%, so JetBlue on FLL to PIT runs 20 points behind the country as a whole. Across a thousand flights that is about 196 extra late arrivals.

On time

57.7%

Arrivals under 15 minutes late, of 298 completed flights

Avg delay

81 min

Across delayed arrivals only, not all flights

Cancelled

1.32%

National rate is 1.89%

Whole route

64.6%

Every carrier on FLL to PIT, 1,107 flights

These figures cover 304 flights between September 2025 and August 2026. Beyond the headline rate, 19.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Carrier by carrier

JetBlue against every carrier on FLL to PIT

JetBlue flew 304 of the 1,107 flights on FLL to PIT, about 27% of it. Its 57.7% on time is 7 points worse than the route as a whole, which runs 64.6%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Spirit at 69.4% to JetBlue at 57.7%.

The two carriers here are closely matched: 5 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.

On-time performance by carrier on FLL to PIT
Airline	Flights	On time	Avg delay	Cancelled	Grade
Spirit Airlines	410	69.4%	70 min	4.88%	C−
Southwest Airlines	393	64.9%	61 min	1.02%	D
JetBlue Airways (this page)thin sample	304	57.7%	81 min	1.32%	D

Spirit Airlines cancels 4.9% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.

Flight by flight

JetBlue flight numbers on FLL to PIT

B6 200820:0557.7% · 304 flights

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Departure window

When JetBlue runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 304 flights.

5am–8am—
8am–11am—
11am–2pm—
2pm–5pm—
5pm–8pm55 flights58.2%
8pm–5am249 flights57.6%

Scale runs 50% to 65%. Rows with fewer than 30 flights show a dash.

The overnight block holds up unusually well at 57.6% on time across 249 flights. Red-eyes fly into empty airspace and empty gates, and they are the first rotation of the aircraft's day rather than the last. The 8pm–5am window is the busiest, with 249 flights scheduled in it.

Across the year

JetBlue on FLL to PIT through the year

Oct–Dec 202561 flights53.3%
Jan–Mar 202690 flights43.5%
Apr–Jun 202691 flights73.6%
Jul–Sep 202662 flights58.1%

Scale runs 35% to 80%.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 57.7% on time across 304 flights.

JetBlue on FLL to PIT did not run the same all year. Its best quarter was Apr–Jun 2026 at 73.6% on time and its weakest Jan–Mar 2026 at 43.5%, a swing of 30 points on roughly 76 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Across the week, Tuesday is the strongest day at 74.4% on time and Monday the weakest at 41.9%, a spread of 33 points.

Arrival by arrival

How late JetBlue on FLL to PIT runs when it is late

The 126 late arrivals split 34 under half an hour, 34 between 30 and 60 minutes, and 58 an hour or more.

15+ min early39 flights13.1%
Within 15 min133 flights44.6%
15–29 min late34 flights11.4%
30–59 min late34 flights11.4%
1–2 hours late32 flights10.7%
2+ hours late26 flights8.7%

Scale runs 0% to 100%.

Share of 298 completed flights by arrival against schedule.

Time lost at the gate mostly stays lost. Of 113 departures that left 15 minutes late or more, only 9 made it up before arrival. In the other direction, 22 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at PIT.

The worst days

Worst days for JetBlue on FLL to PIT

The latest arrival of the period was on 16 November 2025, 7 hours 21 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across November, April, February and March, with no single month standing out.

The latest arrivals of JetBlue on FLL to PIT in the period
Date	Arrived late by	Largest filed cause
16 November 2025	7 hours 21 minutes	Carrier
4 November 2025	6 hours 16 minutes	Late-arriving aircraft
24 April 2026	5 hours 31 minutes	Carrier
15 February 2026	5 hours 5 minutes	National Airspace System
16 March 2026	4 hours 32 minutes	Extreme weather

Delay causes

Why JetBlue runs late on this route

Late-arriving aircraft accounts for 57% of the 10,000 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
57%
Carrier
30%
National Airspace System
11%
Extreme weather
2%
Security
0%

57% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 10,000 reported delay minutes here, that single category outweighs weather by 25 to one. The split is drawn from 10,242 reported delay minutes.

Cancellations sit at 1.32% against a national 1.89%, which is ordinary. Diversions add another 0.66%.

Connections and stage length

What a delay here costs

19.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.

The 994 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.

The return leg is a different operation and performs like one: it runs 82.1% on time across 303 flights, 24 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 24 points of difference.

One caution: this is a thin sample. 304 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking JetBlue on FLL to PIT

Put together: treat all of this as provisional. 304 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 57.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 298 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures